Kristen Stewart and Robert Pattinson Spend Rob's Birthday Apart

Robert Pattinson celebrated his 27th birthday a couple days ago (May 13th), but rumors are surfacing that Kristen Stewart didn't spend his the special day with him. A source claims that Kristen was visibily upset at a friend's house, talking animatedly on her phone, and pacing back and forth. The on-looker believes that she may have been fighting on the phone with Rob, but maybe she was having a hard time trying to secure her plans for after the Cannes Film Festival.

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